How to choose the most lucrative online Altria Pendragon (Alter) bonus?

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Recently, I have become interested in bonuses at online Altria Pendragon (Alter), but it is not always clear which ones are actually beneficial. Welcome bonuses look tempting, but behind them are often complicated wagering conditions. And here with freespins is also unclear: seemingly given for free, but sometimes it is almost impossible to win with them. Who is already in this topic, share your experience - how best to use these promotions? Which bonuses give a real benefit, and which are just marketing? I want to understand how to choose the right offers to get the most out of the game.